So first to the warlocks...
Let me get one flavor text:
Lash of hellfire:
"The perfect torture device. It digs deep and cauterizes the wounds. No mess!"
Rulebook: "They have shown us fire that burns withing etheria and with that fire your nations will burn."
Even thou not ALL warlocks may be evil, surely MOST are, as most spells are not for simply killing but for killing realy painfull (magebaine, gouhl rot).
+ I never talked about satanists - i just talked about warlocks. Neither did Arcane wonders talk about satanists - they created warlocks. Demons are a huge team in fantasy worlds, and these are not "christian" or "moslem" or "someothercrazyrelgion" demons - that are evil fantasy demons that exist. And i have to say i love demons - chaos in warhammer? Amazing, i'm happy everytime i see one of those epic kickass khorne warriors... a bit less when i know i have to face him soon cause he is on the side of my enemys...
there is no such thing as god or satan in mageawars - and if you want my personal opinion (if someone want to be offended - be it. Its my personal opinion, and as much as you think your religion is right i think i'm right -no need to respond, i don't want a discusion about religion in this threat): Religions are bullshit, drugs for the desperate people who need it to get through life, we would all be much better of without it (less wars, more technological advantage, just think of all the scientists and books that burned in thename of religion and all the wars that were made in name of religion)
But in general i agree with you, not because you use some type of magic you are nececary evil - there may be warlocks who stuck to this kind of magic for some damn good reasons. I know story about an order of bloodmages whos weapons absorbed the blood of their enemys for spells, who used this power because they needed it to keep the country alive - not because they were evil or something.
But those guys are usualy minorety
So the national dependence: This is a sign of globalisation, there was no such thing in such a scale in the past, and even if you need the resources of the other country - why not conquer it? USA uses china for cheap labor and many labourers - but what would be cheaper then slaves?
The contract - who created it? There is no such thing as a united powerfull magical force, as far as we know.
Also - there are always some madmen who want to see the world burn, and gladly sacrisfice themself for that sake, so the knockback on etheria would just be a bonus to such individuals
And on the mage country: Its the main reason why i can't accept that the mage wars are there to restrict useage of magic... experiments with magic can always fail, and if a country of manic wizzards, who all think themself as geniuses experimentates 24/7 there has to be some HUGE failures... that may likely have effects like a war had.
(Just think about a mage that wants to create a "mana battery"... day for day he stucks his mana in it, and after some years it explodes... imagine the explosion - keep in mind that the same wizzard can build up mana to cast "Electrify" in less then a minute.)